7.3 longevity
Logistics Pro
Joined: Jan 2010
Posts: 4,124
Likes: 1,645
Jump down to the 7.3 forum further down, they'll have better responses for you.
That said the 7.3 is arguably as bullet proof as the old Cummins. If you take care of it, don't rag on it, and keep the oil full and fresh, it'll last a LONG time.
That said the 7.3 is arguably as bullet proof as the old Cummins. If you take care of it, don't rag on it, and keep the oil full and fresh, it'll last a LONG time.
Tuned
Joined: Dec 2015
Posts: 349
Likes: 72
From: Seguin, Texas
Don't put any additives in your engine oil. If the oil needs an additive then it isn't a good oil.
Tuned
Joined: Oct 2013
Posts: 293
Likes: 119
100% agreed, particularly with the HEUI injection system on this engine using highly pressurized engine oil to fire the injectors. A quality oil that meets the Ford WSS-M2C171-F1 specification and changed regularly is recommended.
Lead Driver
Joined: May 2011
Posts: 5,790
Likes: 449
How long have you owned the truck? Have you ever replaced injectors?
The best part of the 7.3 is longevity of injection components and, as a result, rotating assembly.... and basically nothing else. It doesn't get good mileage vs other diesels, it doesn't make much power compared to other diesels, it's much more complicated than other diesels, but damn will it keep running (the caveat is having to replace sensors and an IDM along the way). There are things you can do to check the health of your injection components, some of which require a lot of time, others not so much. Does it start well when cold? What does the blowby look like? There are also things you can do for a "tune up" that I'll get into if that's where we wanna go with the thread, such as injector cleaning and oil additives, but the reality is:
No other engine in a pickup truck, and possibly on the planet, has reached 500k miles on factory injection components in more vehicles than the 7.3 powerstroke. How's that for longevity?
The best part of the 7.3 is longevity of injection components and, as a result, rotating assembly.... and basically nothing else. It doesn't get good mileage vs other diesels, it doesn't make much power compared to other diesels, it's much more complicated than other diesels, but damn will it keep running (the caveat is having to replace sensors and an IDM along the way). There are things you can do to check the health of your injection components, some of which require a lot of time, others not so much. Does it start well when cold? What does the blowby look like? There are also things you can do for a "tune up" that I'll get into if that's where we wanna go with the thread, such as injector cleaning and oil additives, but the reality is:
No other engine in a pickup truck, and possibly on the planet, has reached 500k miles on factory injection components in more vehicles than the 7.3 powerstroke. How's that for longevity?
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apache84
1999 - 2003 7.3L Power Stroke Diesel
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